Frontiers in Chemistry (Mar 2019)

Anion Dependent Self-Assembly of Polynuclear Cd-Ln Schiff Base Nanoclusters: NIR Luminescent Sensing of Nitro Explosives

  • Hongfen Chen,
  • Xiaoping Yang,
  • Weizhong Jiang,
  • Dongmei Jiang,
  • Dongliang Shi,
  • Bichen Yuan,
  • Fei Wang,
  • Lijie Zhang,
  • Shaoming Huang

DOI
https://doi.org/10.3389/fchem.2019.00139
Journal volume & issue
Vol. 7

Abstract

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Two types of polynuclear Cd-Ln complexes [CdLnL(NO3)Cl2(DMF)2] [Ln = La (1) and Nd (2)] and [Ln2CdL2(NO3)2(DMF)2](OH)2 [Ln = La (3) and Nd (4)] were constructed using a new Schiff base ligand which has a long backbone with two phenyl groups. The Schiff base ligands show a “twist” configuration in 1–4. The crystal structures show that the molecular dimensions of 3 and 4 are about 6 × 10 × 15 Å. The Cd-Nd complexes 2 and 4 exhibit the typical NIR luminescence of Nd3+. Interestingly, 4 shows the luminescent sensing of nitro explosives and exhibits a high sensitivity to 2-nitrophenol at the ppm level.

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